Whipple, F. L., & Green, D. W. E. (1985). The mystery of comets. Smithsonian Institution Press.
Chicago Style (17th ed.) CitationWhipple, Fred L., and Daniel W. E. Green. The Mystery of Comets. Washington, D.C.: Smithsonian Institution Press, 1985.
MLA (9th ed.) CitationWhipple, Fred L., and Daniel W. E. Green. The Mystery of Comets. Smithsonian Institution Press, 1985.
Warning: These citations may not always be 100% accurate.